body {
    margin: 0;
    padding: 0;
    background: url("../images/mybg.jpg") no-repeat;
    background-size: 100%;

}
h1{
    margin-top: 200px;
}


form {

    position: absolute;

    width: 100%;
    height: 100%;


    text-align: center;

    /*box-shadow: 0px 0px 15px #0005;*/

}

.input_1 {
    outline: none;
    margin-top: 10px;
    border: 0;
    width: 90%;
    height: 50px;
    border-radius: 15px;
    padding-left: 15px;
    font-size: 18px;

}

.input_2 {
    margin: 20px 0px;
    border: 0;
    background: #fff;
}

h1 {
    color: #000000;
}

/*单选*/
.radio_box {
    display: inline-block;
    position: relative;
    margin: 20px 5px;
}

.radio_box label {
    width: 15px;
    height: 15px;
    position: absolute;
    top: 0;
    left: 0;
    border: 2px solid #3A5367;
    border-radius: 50%;
    background: #fff;
    cursor: pointer;
}

.radio_box input:checked + label:after {
    content: '';
    width: 9px;
    height: 9px;
    position: absolute;
    top: 3px;
    left: 3px;
    background: #3A5367;
    border-radius: 50%;
}

.check_box em {
    margin: 0 0 0 5px;
}

.input_3 {
    outline: none;
    width: 50px;
    height: 30px;
    border: 0;
    padding: 5px 7px;
    background: #fff;
    border-radius: 20px;
    margin: 0px 10px;
}